For a long time, one of the DMs in my usual group has claimed that Knowledge (Local) has to be tied to a specific region. For example, you could take Knowledge (Restov). So, we've always just played under that assumption.
The rules, however, don't seem to make that obvious. In fact, they don't seem to suggest that idea at all.
Knowledge (Int; Trained Only)
You are educated in a field of study and can answer both simple and complex questions. Like the Craft, Perform, and Profession skills, Knowledge actually encompasses a number of different specialties. Below are listed typical fields of study.
(ed: skipping most of them)
- Local (legends, personalities, inhabitants, laws, customs, traditions, humanoids)
Check: Answering a question within your field of study has a DC of 10 (for really easy questions), 15 (for basic questions), or 20 to 30 (for really tough questions).
Then there's a DC table which includes the following entries for Knowledge (Local):
- Know local laws, rulers, and popular locations - DC 10
- Know a common rumor or local traiditon - DC 15
- Know hidden organizations, rulers, and locations - DC 20
It seems like Knowledge (Local) covers all (legends, personalities, inhabitants, laws, customs, traditions, humanoids), just as Knowledge (History) covers all (wars, colonies, migrations, founding of cities) and Knowledge (Nobility) covers all (lineages, heraldry, personalities, royalty).
So, is Knowledge (Local) tied to a specific region, or does it cover a broader scope like the other knowledges?